Problem while tempting to save related data

Need Help
8

Here: Saving Data - 3.10

I’m not sure how to implement this using the form helper, but this problably works

$data = [
    'contact_types' => [
        '_ids' => [5, 4]
    ]
];
$user = $this->Users->patchEntity($user, $data);

maybe $this->Form->input('contact_types._ids[]', ['options' => $contactTypes]);